Attitude Pointing Control Of Rendezvous Spacecraft And Verification Of The Ground Simulation

To meet the need of space industry,various space task mode are emerging constantly and widespread attention of the domestic and foreign has gradually raised.This paper proposes a space task mode is maneuvering platform forms a high-speed approaching situational awareness with the object,which is space object approaching.In the approaching process,the observation task is completed for the object.This paper is based on the observation of the space object approaching process and some key problems such as observatio n of approaching process and attitude control are researched in the approaching process of platform-object.Besides,this paper provides theoretical foundation for distributed real-time simulation and has high engineering application value,and the Hardware-in-the-Loop Simulation test of ground experiment is carried out,which provides test platform for space task technology.The main research contents include:(1)To explore space task,this paper describes the connotation of observation of space object approaching process from task overall analysis.To starts with that this paper analyzes characteristics of the observation of space object approaching process and the corresponding task scenarios are designed.Then the relative motion of platform-object is analyzed based on task and the relative motion orbital dynamics model and the relative motion attitude dynamics model are established.(2)In order to solve the attitude control problems of observation of space object approaching process,attitude determination is carried out for observation of space object approaching process.The attitude controller is designed based on the non-singular terminal sliding mode control method and it is analyzed by simulation.(3)The distributed real-time simulation scheme of control system of observation of space object approaching process is designed and building the Hardware-in-the-Loop Simulation software by MATLAB/Simulink,the overall design scheme of the distributed real-time simulation is presented and the realization sc heme of each subsystem is analyzed and designed.Based on the above contents,distributed real-time simulation test is achieved by RTLAB.(4)To analyze and verify the simulation system of the Hardware-in-the-Loop Simulation test of ground experiment,analyzing the attitude of the simulation platform of the five-axis turntable and establishing the mathematical model to verify simulation example.The Hardware-in-the-Loop Simulation software is finished by MATLAB/Simulink.And according to the proposed verific ation from the interface of a single physical component to each physical access to simulation loop to have a verification.Simulation results demonstrate that the scheme of the Hardware-in-the-Loop Simulation test of ground experiment is feasible,data str ucture and signal flows are correct and the validity of model is verified.The attitude control method and the attitude controller in this paper can accomplish the task effectively,so the theoretical tool is provided for the distributed real-time simulation experiment and has a certain engineering application value.Based on the Hardware-in-the-Loop Simulation test of ground experiment system built in this paper,the system can be used for real-time tracking and identification test and support the research of observation system design,space object recognition and attitude control.There is a lot of value,for example reducing the cost of space technology test greatly,shorting development period and providing reliable means and tools for the simulation test of space technology.